Why?
She is one of the most selfless characters ever, agreed to go into a trap just to save her friends (TWICE!) and then rescued herself, and just straight up had the balls to grab a blaster pointed directly in her face!

Why?
While she may be the cute butt monkey, do not underestimate her! She also has a fiery temper.
Also: she single-handedly beat the Red Ranger all on her own while he was using his super special power up!

Why?
Megaranger says screw you to Red-exclusive things and was like, "here Chisato, you can have a Battle Riser too." And she will not hesitate to spam the heck out of it without her powers.
Also, her main weapon is a slingshot.